MaxPower Corp OceanAire Portable - Manual (Page 14)

DDA, Duct Adapter is used to apply a single discharge duct to the evaporator. The standard grille is removed
and the Adapter is attached with sheet metal screws in its place. The PAC10 and 12
transition to 6 inch round duct. The evaporator blower section can handle 25 equivalent feet of 6 inch round
duct or .15 E.S.P.
The PAC18, 24 and 36 transition to 10 inch round duct. The evaporator blower section can handle 50
equivalent feet of 10 inch round duct at .25 E.S.P.
The PAC60 transitions to 16 inch round duct and can handle 100 equivalent feet of 16 inch round duct or .50
E.S.P.
The Duct Adapter can be used with the evaporator plenum to provide true space air conditioning. Remember,
when calculating “equivalent” feet, the length of the supply run must be added to the length of the return
run.....and......add 6 feet of length for each 90° bend.
For a straight run on a PAC12 with no elbows there could be 12 1/2 feet of 6 inch supply duct and 12 1/2 feet
of 6 inch return duct, for 25 equivalent feet.
For a straight run on a PAC18, 24 or 36, there could be a 30 foot run of 10 inch, and a 20 foot run of 10 inch
supply for a total of 50 equivalent feet.
These air handling characteristics are also found on the Polaris water cooled units.
The condenser section has its own blower and is independent of the evaporator section.
DUCT ADAPTER
Duct Adapter
Model
Round
Duct Size
PAC
10
PAC
12
PAC
18
PAC
24
PAC
36
PAC
60
DDA-6 6 inch Yes Yes No No No No
DDA-10
10 inch No No Yes Yes Yes No
DDA-16
16 inch No No No No No Yes
Maximum Approx Equivalent Feet
(add 6 feet for each 90° elbow)
25 25 50 50 50 100
Maximum E.S.P .15 .15 .25 .25 .25 .50
DDA-10
12 airbossmanpg12
DDA-10 DDA-16
View of unit with
the optional Duct
Adapter installed.